Take-up mechanism for looms.



Patented nee, I6, I902 -C. F. ROPERV TAKE-UP MECHANISM FUR LOOMS.(Apphcatxon filed Feb 8, 1902 1 1am Model.)

UNITED STATES PATENT OFFICE.

CHARLES E. ROPER, or HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPERCOMPANY, or HOPEDALE, MASSACHUSETTS, A CORPORA- TION or MAINE.

TAKE-UP MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 716,282, dated December16, 1902.

v --App1ication filed February 8, 1902- Serial No. 93,203. (No model.)

To dZZ whom it may concern: i Be it known that 1, CHARLES F. RoPER, acitizen of the United States, and aresident of Hopedale, county ofWorcester, State of the means-for taking up the cloth as it is woven ona loom; and one of the objects of my invention provides for a verysimple, directacting, and effective take-up mechanism.

The novel features of my invention will be hereinafter described, andparticularly pointed out in the following claims.

Figure 1 is a front elevation of a portion of a loom at the left-handsidethereof with one embodiment of. my invention applied thereto. Fig.2- is a side elevation of the mechanism shown in Fig. 1 viewed from theleft. Fig. 3 is a detail, partly in section, on the line 3 3, Fig. 1.Fig. 4 is a side elevation of the actuating-pawl, and Fig. 5 is an innerface view of the ratchet with which the pawl cooperates.

Referring to Figs. 1 and 2, the loom side 1, breast-beam 2, the lay 3,and lay-sword 4, fulcrumed on the shaft 5, supported on the loom sides,the controlling or operating rock-shaft 6, mounted in suitable bearingsbelow the.

breast-beam and having an upturned arm 7 in the path of movement oftheouter end of the weft-fork slide of well-known construction and notherein shown, may be and are all of usual construction 1 and operate inwellknown manner. The controlling rock-shaft 6 corresponds to therock-shaft din United States Patent No. 659,628, dated October 9, 1900,rocking of such shaft by or throughan abnormal condition of the fillingoperating in my present invention to arrest the action of the take-upmechanism, as will appear more fully hereinafter.

The core or bar 8, upon which the roll of cloth 9 is wound, is mountedin suitable bearings in stands, one of which is shownat 10,

Figs. 1 and 2, and forming no part of my present invention. r

The take-up or sand roll 11, as it is sometimes called, has its shaft 12supported in suitable bearings, one of which, as 13, is shown in Figs.1, 2, and 3 as forming part of abracket 14, suitably secured to the loomside, the end of the Shaft extended through said bearing having rigidlyattached to it a worm-gear 15.

The Worm-gear is in mesh with and is driven by a worm 16, fast on ashaft 17, rotatably mounted in bearings 18 on the bracket 14, as clearlyshown in Fig. 3, the front end of said shaft being extended forwardbeyond the bracket and having a polygonal portion 19 adjacent itsthreaded end 20. A ratchet, shown as a disk 21, having a series ofcircularly-arranged teeth 22 on its inner face, has a hole 23, Fig. 5,corresponding to the crosssection of the part 19 of the worm-shaft, andsaid ratchet is mounted thereon, being held securely in place against ashoulder 24 on the shaft by a suitable washer 25 and nut 26. (Best shownin Fig. 3.) Between the inner face of the ratchet and the adjacentbearing 18 an actuatingpawl 27 (see Fig. 4) is pivotally mounted on theshaft 17, said pawl having an elongated opening 28 therein, throughwhich the Shaft passes. The pawl has a tooth or ing 29 to cooperate withthe teeth of the ratchet, and above said lug I have shown twoprojections 30, which are adapted to engage the inner face of theratchet within the series of teeth thereon, and said pawl has alaterally-extended and rearWardly-bent guide-arm 31 and a dependingfinger 32 for purposes to be described. A spring 33, coiled about theshaft 17 between the pawl and the adjacent bearing 18, yieldinglymaintains the pawl in cooperative enon an arm 37, rigidly attached tothe laysword 4, as clearly shown in Figs. 1 and 2. Collars 38 39 areadjustably secured to the link above and below the boss 36,respectively, and so located that when the lay heats up the arm 37swings down and causes the boss 36 to engage the collar 39, and therebypull the link 35 downward. This rocks the pawl in the direction of thearrow 40, Fig. 4, and turns the ratchet and its attached shaft, therebygiving a partial turn to the worm, and thence through the worm-gear thetake-up roll is turned to take up the cloth as it is woven. Thisintermittent or step-by-step rotation of the ratchet and take-up rollcontinues while the loom is running, and the cloth is gradually andpositively taken up and wound on the bar 8. When the lay swings back,the boss 36 rises and engages the collar 38, lifting the link to swingthe pawl back to starting position to engage a new tooth of the ratchet,and as the lug 29 rides over the tooth or teeth of the ratchet thespring 33 is compressed, the pawl tipping on the shaft 17 and beingsupported by the engagement of the projections 30 with the inner face ofthe ratchet 21. The guide-arm 31 travels on the upright face of the loomside and serves to guide and steady the pawl when it is swung back andforth.

By substituting ratchets having different numbers of teeth the angularmovement of the worm at each beat of the lay can be varied as desired,the collars 38 and 39 being adjusted to correspond, it being obviousthat the greater the number of ratchet-teeth the shorter must be thestroke of the pawl if the ratchet is to be advanced one tooth at a time.If a ratchet be used with a large number of teeth, the pawl can be madeto advance the ratchet one or more teeth each stroke by adjusting thecollars.

I have shown the controlling rock-shaft 6 provided with a bent anddownturned arm 41, which extends in front of the finger 32 of the pawland normally not engaging it; but when the said rock-shaft is turnedupon the occurrence of an abnormal condition of the filling, such asbreakage thereof or its substantial exhaustion in the shuttle, then thearm 41 is brought into engagement with the finger 32 and the pawl istipped on the shaft 17, compressing the spring 33 and preventingengagement of the pawllug 29 with the ratchet-teeth, so that themovement of the pawl by or through the motion of the lay will notoperate the take-up until the rock-shaft 6 is returned to normalposition. The tipping of the pawl just referred to is permitted by theelongation of the opening 28. A finger-piece 42 is shown on the outerface of the ratchet to enable reverse rotation of the latter by hand ifit is desired to let back the cloth.

From the foregoing specification, taken with the drawings, it will bemanifest that I have eliminated the usual train of gearing between thetake-u p roll and the primary actuating device, and by so doing I notonly reduce parts and simplify construction, but I practically eliminatebacklash and lost motion and transmit directly to the take-up roll theaction of its actuating device. The worm and worm-gear obviate thenecessity for detent-pawls or other devices for preventing retrogrademotion of the take-up roll, as the well-known self-locking action of theworm and worm-gear controls the take-up roll absolutely at all times.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. In take-up mechanism for looms, atakeup roll having an attached worm-gear, a worm in mesh with and torotate the gear, a ratchet on the Worm-shaft, a cooperating pawlfulcrumed on the worm-shaft, a spring to yieldingly maintain the pawl incooperative relation with the ratchet, and means to intermittinglyactuate the pawl.

2. In take-up mechanism for looms, a takeup roll havin g an attachedworm-gear, a worm in mesh with and to rotate the gear, a ratchetdiskfast on the worm-shaft and having circularly-arranged teeth on its innerface, a

cooperating pawl fulcruined on and adapted to tip on the worm-shaft, alug and a projection on the pawl, on its face adjacent the ratchet-diskand on opposite sides of the worm-shaft, a spring to yieldingly maintainthe pawl in cooperative relation with. the ratchet-disk, and means tointermittingly actuate the pawl, the latter tipping and being supportedby engagement of the projection with the ratchet-disk as the lug ridesover a ratchet-tooth on the retractive stroke of the pawl.

3. In take-up mechanism for looms, a takeup roll, a rotatable shaft,connections between it and the take-up roll, to rotate it by or throughrotation of the shaft, a ratchet on the shaft, a cooperating pawlfulcrumed on the said shaft, a spring to yieldingly maintain the pawl incooperative relation with the ratchet, and means to intermittinglyactuate the pawl.

4. In take-up mechanism for looms, a takenp roll, a rotatable shaft,connections between it and the take-up roll, to rotate it by or throughrotation of the shaft, a ratchetdisk on the shaft, havingcircularly-arranged teeth on its inner face, a cooperating pawlfulcrumed upon and adapted to tip on the shaft adjacent to the disk, aspring to yieldingly maintain the pawl in cooperative relation with theratchet-disk, said pawl having a lug on its face to engage theratchet-teeth, and means to actuate the pawl, retraction thereof causingit to tip on the shaft to permit its lug to ride over the ratchet toothor teeth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES F. ROPER.

Witnesses:

FRANK J. DUTOHER, ERNEST W. W001).

